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Finding the Fourth Proportional to 8,472.67, 12,698.37 and 4,313.72

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Solution

The fourth proportional to 8,472.67, 12,698.37 and 4,313.72 is: 6,465.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.67 : 12,698.37 = 4,313.72 : x
  2. Step 2: Convert to fraction form
    8,472.67/12,698.37 = 4,313.72/x
  3. Step 3: Cross multiply
    8,472.67x = 12,698.37 × 4,313.72
  4. Step 4: Simplify right side
    8,472.67x = 54,777,244.38
  5. Step 5: Solve for x
    x = 54,777,244.38/8,472.67
  6. Step 6: Final answer
    x = 6,465.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.